Embedded sheet type drip irrigation tape dripper clamping and discharging mechanism and dripper screening machine

Abstract

The utility model belongs to the technical field of dripper screening, and particularly discloses an embedded sheet type drip irrigation tape dripper clamping position discharging mechanism and a dripper screening machine, and the embedded sheet type drip irrigation tape dripper clamping position discharging mechanism comprises a first sensor fixedly arranged on a conveying track, a second sensor fixedly arranged at an inlet of the conveying track, and a control unit, the control unit sends a driving instruction to control the motor to drive the outer ring to rotate reversely after receiving a first detection signal that the first sensor does not detect the water dropper for N seconds and a second detection signal that the second sensor continuously detects the water dropper. By means of automatic detection and linkage control, accurate identification can be carried out when the drippers are stuck, the stuck drippers are discharged, the rejection rate is reduced, and meanwhile the continuity of a high-speed production line is guaranteed. The dripper screening device is suitable for screening drippers in a drip tape production line.

Description

Technical Field

[0001] This utility model belongs to the field of dripper screening technology, and relates to an embedded drip irrigation tape dripper positioning and discharge mechanism and a dripper screening machine. Background Technology

[0002] Water-saving irrigation is a major measure adopted by countries around the world to develop modern agriculture. Among them, drip irrigation is an advanced and high-standard irrigation technology that uses drip irrigation pipes with flat drippers glued to the inside to irrigate crops. The structure of the drip irrigation pipe is that the drippers are evenly glued to the inner wall of the plastic tube. The drippers have water channels and drip holes leading to the outside of the pipe. The water entering the drip irrigation pipe drips directly to the roots of the plants through the water channels and drip holes on the drippers.

[0003] Embedded drippers are a commonly used type of dripper in actual production. During the drip irrigation tube manufacturing process, embedded drippers selected by a dripper screening device are embedded into an extruded plastic tube. Then, a punching device punches holes in the plastic tube at the locations of the embedded drippers to form the drip irrigation tube. Embedded drippers have a distinct front and back side. The structure of a certain type of embedded dripper is as follows: Figure 1 As shown, during the production process of the embedded drip irrigation tape, it is necessary to ensure that the embedded drippers selected by the dripper screening device are in the correct direction; otherwise, quality problems will occur during subsequent drilling.

[0004] Chinese utility model patent CN202823900U discloses an embedded dripper sorting device, comprising a frame, an inner disc, an outer ring, an outer retaining ring, an arc-shaped groove, an air blowing channel, and a conveying track for conveying the embedded drippers. The inner disc and the outer ring are rotatably connected to the frame, with the inner disc located within the outer ring. The outer retaining ring is positioned on the upper surface of the outer ring and has an arc-shaped groove. The arc-shaped groove and the upper surface of the outer ring form a conveying channel to deliver the drippers into the conveying track. It utilizes the speed difference between the inner disc and the outer ring to sort the drippers, and during the dripper conveying process, the arc-shaped groove and the air blowing channel discharge drippers on the reverse side, thereby ensuring that the drippers pass through the conveying track in the correct orientation. As the processing speed of drip irrigation tape production lines increases, the dripper sorting machine operates at high speed during the dripper sorting process. This can easily lead to drippers getting stuck at the inlet of the conveyor track inside the machine. Because the outer ring is constantly rotating under the drive of the motor, the stuck drippers are compressed by subsequent drippers, and air blowing alone cannot clear the blockage. This prevents the dripper sorting machine from supplying drippers to the production line, causing the drip irrigation tape production line to shut down. Therefore, a mechanism capable of identifying and resolving dripper jamming is needed to improve the reliability of the dripper sorting machine and ensure continuous operation of the production line. Summary of the Invention

[0005] The purpose of this utility model is to provide an embedded drip irrigation tape dripper locking and discharge mechanism that can accurately identify and discharge the stuck dripper when it is stuck.

[0006] The second objective of this invention is to provide a dripper sorting machine that includes the aforementioned embedded dripper positioning and discharge mechanism.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An inlaid drip irrigation tape dripper positioning and discharge mechanism is characterized by comprising a first sensor for detecting drippers fixed on a conveying track, a second sensor for detecting drippers fixed at the entrance of the conveying track, and a control unit;

[0009] The signal output terminals of the first and second sensors are connected to the signal input terminal of the control unit; the signal output terminal of the control unit is connected to the control terminal of the motor that controls the forward and reverse rotation of the outer ring.

[0010] After receiving a first detection signal from the first sensor indicating that no dripping head has been detected for N seconds and a second detection signal from the second sensor indicating that a dripping head has been detected, the control unit sends a drive command to control the motor to stop and reverse; N is a positive number.

[0011] Preferably, it also includes a rejection mechanism for discharging the cartridge tip;

[0012] The rejection mechanism is fixed to the side wall of the outer retaining ring;

[0013] The signal output terminal of the control unit is connected to the control terminal of the rejection mechanism;

[0014] After receiving the first detection signal and the second detection signal, the control unit sends a rejection command to control the rejection mechanism to discharge the stuck drip head.

[0015] Preferably, the rejection mechanism includes an air nozzle, a solenoid valve, and an air source;

[0016] The blowing end of the air nozzle faces the dripper, and the other end is connected to the air source through a solenoid valve;

[0017] The signal output terminal of the control unit controls the connection of the solenoid valve.

[0018] Preferably, at least one braking mechanism for stopping the outer ring from rotating is fixed around the outer ring;

[0019] The signal output terminal of the control unit is connected to the control terminal of the braking mechanism;

[0020] After receiving the first detection signal and the second detection signal, the control unit sends a braking command to control the braking mechanism to perform the braking action.

[0021] Preferably, the braking mechanism includes a brake rod that presses against the outer side of the outer ring of the screening machine to cause braking during braking, and a first cylinder that pushes the brake rod to brake.

[0022] The control terminal of the first cylinder is connected to the signal output terminal of the control unit.

[0023] Preferably, it also includes an alarm; the signal input terminal of the alarm is connected to the signal output terminal of the first sensor; the alarm performs an audible and visual alarm after receiving the first detection signal.

[0024] Preferably, the first sensor and the second sensor are each one of a photoelectric sensor, a capacitive sensor, an inductive sensor, an ultrasonic sensor, a pressure sensor, or a mechanical induction sensor.

[0025] The dripper screening machine is equipped with the aforementioned embedded drip tape dripper positioning and discharge mechanism.

[0026] The technological advancements achieved by this invention compared to existing technologies, due to the adoption of the aforementioned technical solution, are as follows:

[0027] (1) This utility model uses motor reversal to discharge the jammed dripper. Motor reversal can quickly release the squeezing pressure on the jammed dripper, avoid mechanical damage and dripper deformation, effectively solve the blockage problem that traditional single air blowing cannot handle. Through automatic detection and linkage control, the scrap rate is reduced while ensuring the continuity of the high-speed production line. At the same time, energy consumption and maintenance costs are reduced, providing a practical solution for the intelligent development of modern agricultural equipment.

[0028] (2) The present invention adds a rejection mechanism. While the outer ring reverses, the rejection mechanism removes the stuck drip head, reducing the reversal distance of the outer ring, shortening the unblocking response time, and avoiding energy waste caused by reversal.

[0029] (3) This utility model adds a braking mechanism, which can stop the outer ring from rotating instantly, completely eliminate the dynamic squeezing force on the stuck dripper, and avoid secondary jamming caused by inertial displacement during the reverse process; precise braking makes the subsequent dripper stop pushing immediately, creating a zero-pressure environment for the reverse action, ensuring that the dripper is completely disengaged from the mechanical engagement state during the reverse; combined with the removal mechanism, a three-stage unblocking process of "braking-retraction-removal" can be formed, while reducing the motor reverse torque requirement and extending the service life of the equipment;

[0030] (4) This utility model can achieve a millisecond-level fast response by precisely adjusting the action of the first cylinder through the control unit, ensuring that the brake lever can complete the braking at the moment the jamming signal is detected; the linear thrust characteristics of the cylinder make the braking force evenly distributed, avoiding mechanical impact damage to the drip head; and the cylinder structure is simple and reliable with low maintenance cost, which improves the practicality and reliability of this utility model.

[0031] (5) The rejection mechanism in this utility model fixes the air nozzle to the side wall of the outer retaining ring and faces the dripper, which can form a directional airflow beam to accurately cover the detachment trajectory of the stuck dripper; at the same time, the linkage between the solenoid valve and the control unit realizes the air circuit on / off response at the level of 10ms, and forms millisecond-level coordination with the braking-reverse action, which greatly improves the discharge efficiency of the stuck dripper; air is blown only during reverse, which improves the utilization rate of the air source and improves the efficiency and stability of this utility model.

[0032] (6) This utility model can accurately distinguish between real jamming and normal delivery interval through the dual verification of continuous monitoring by the inlet sensor and delayed judgment by the outlet sensor. This composite condition judgment of "inlet retention + outlet loss" can effectively avoid false triggering caused by interference such as dripper flipping and vibration of a single sensor, and greatly improve the recognition accuracy of dripper jamming.

[0033] (7) This utility model adds an alarm device. When the sound and light alarm is triggered, it can immediately remind the operator that there is a risk of drip head jamming or flow interruption, assist the operator in quickly locating the fault point, making manual intervention more timely, reducing troubleshooting time, improving equipment maintenance efficiency, and avoiding scrap due to equipment blockage.

[0034] This invention belongs to the field of dripper screening technology. Through automatic detection and linkage control, it can accurately identify and discharge drippers when they are stuck, thereby reducing the scrap rate, energy consumption and maintenance costs, and ensuring the continuity of high-speed production lines. Attached Figure Description

[0035] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0036] In the attached diagram:

[0037] Figure 1 This is a structural diagram of a certain type of embedded drip tip;

[0038] Figure 2 This is a schematic diagram showing the installation positions of the first sensor, the second sensor, the braking mechanism, and the rejection mechanism in a top view of Embodiment 1 of this utility model.

[0039] Figure 3This is a schematic diagram of the signal connection in Embodiment 1 of this utility model;

[0040] Figure 4 This is a schematic diagram of the braking mechanism in Embodiment 1 of this utility model.

[0041] In the diagram: 1. Conveying track; 2. First sensor; 3. Second sensor; 4. Rejection mechanism; 5. Braking mechanism; 51. Brake lever; 52. First cylinder. Detailed Implementation

[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0043] Example 1: An inlaid drip irrigation tape dripper positioning and discharging mechanism

[0044] This embodiment is an improvement on the Chinese utility model patent with authorization announcement number CN202823900U. It focuses on the improvements, while the parts not described are the same as the prior art.

[0045] like Figures 2 to 4 As shown, this embodiment is an embedded drip irrigation tape dripper positioning and discharge mechanism, including a first sensor 2 fixed on the conveying track 1 for detecting drippers, a second sensor 3 fixed at the entrance of the conveying track 1 for detecting drippers, and a control unit. The signal output terminals of the first sensor 2 and the second sensor 3 are connected to the signal input terminal of the control unit; the signal output terminal of the control unit is connected to the control terminal of the motor that controls the forward and reverse rotation of the outer ring.

[0046] For ease of installation, in this embodiment, the first sensor 2 is located at the outlet of the conveying track 1. Its installation position can be adjusted according to the actual situation, as long as the first sensor 2 is located on the conveying track 1.

[0047] After receiving the first detection signal from the first sensor 2 indicating that no dripper has been detected for one second, and the second detection signal from the second sensor 3 indicating that a dripper has been detected, the control unit sends a drive command to control the motor to reverse. During the reversal process, the jammed dripper will fall into the dripper sorting machine. If the jammed dripper does not fall, the air blowing mechanism used by the equipment to remove drippers from the reverse side can also expel the jammed dripper.

[0048] To enable the outer ring to reverse more quickly, this embodiment preferably employs three braking mechanisms 5, evenly distributed on the outer surface of the outer ring. When a stuck dropper needs to be removed by reversing the mechanism, the control unit stops the outer ring and simultaneously activates the braking mechanisms 5 to brake the outer ring. Then, it controls the drive motor of the outer ring to reverse. Each braking mechanism 5 includes a brake lever 51 that presses against the outer side of the screening machine's outer ring during braking, and a first cylinder 52 that pushes the brake lever 51 to apply the brake. The signal output terminal of the control unit is connected to the control terminal of the first cylinder 52 in the three braking mechanisms 5.

[0049] Meanwhile, the aforementioned action of expelling the stuck dripper requires the motor to rotate a considerable distance in the opposite direction. To further improve this embodiment and make the expulsion of the stuck dripper faster, this embodiment also includes a rejection mechanism 4, which is fixed to the side wall of the outer retaining ring for expelling the stuck dripper. Furthermore, the control signal output terminal of the control unit is connected to the control terminal of the solenoid valve in the rejection mechanism 4.

[0050] The rejection mechanism 4 includes an air nozzle, a solenoid valve, and an air source fixed to the side wall of the outer retaining ring. The air nozzle's blowing end faces the dripper, and the other end is connected to the air source via the solenoid valve. The control signal output terminal of the control unit is connected to the control terminal of the solenoid valve in the rejection mechanism 4.

[0051] After receiving the first detection signal and the second detection signal, the control unit first sends a braking command to control the first cylinder 52 of the three braking mechanisms 5 to perform the braking action, then sends a drive command to control the motor to brake and reverse, and sends a rejection command to control the opening of the solenoid valve to realize the blowing.

[0052] This embodiment also includes an alarm. The signal input terminal of the alarm is connected to the signal output terminal of the first sensor 2. After receiving the first detection signal output by the first sensor 2, the alarm will trigger an audible and visual alarm.

[0053] Under normal circumstances, the motor drives the outer ring to rotate in the forward direction, and qualified drippers are transferred to the next process of the production line via the conveyor track 1. The above operating mode has been mentioned in the Chinese utility model patent with authorization announcement number CN202823900U, and will not be described in detail here.

[0054] Both the first sensor 2 and the second sensor 3 are photoelectric sensors. In this embodiment, a composite condition of "inlet retention + outlet absence" is used to determine whether the dripper is stuck: if the first sensor 2 does not detect a dripper for more than one second, it transmits a first detection signal to the control unit; if the second sensor 3 detects a dripper at the entrance of the conveyor track 1, it transmits a second detection signal to the control unit. The control unit sends a braking command, a driving command, and a rejection command only when it receives both the first and second detection signals simultaneously. At this time, the first cylinder 52 of the three braking mechanisms 5 pushes the brake lever 51 to contact the outer ring, stopping the outer ring; then the brake is released, the motor reverses, and the solenoid valve opens, blowing out the stuck dripper with the air nozzle, thus removing the stuck dripper. After braking, the brake is released again, the motor resumes forward rotation, and the qualified drippers are continuously conveyed to the next process on the production line.

[0055] In this embodiment, in order to achieve precise control and avoid wasting time, a multi-stage execution sequence can be adopted: the first execution sequence executes the braking command, and the three sets of first cylinders 52 simultaneously clamp the outer ring to achieve complete braking; the second execution sequence executes the driving command, and the motor reverses to drive the outer ring back, eliminating the squeezing force of the stuck dripper; the third execution sequence executes the rejection command, the solenoid valve opens, the air nozzle discharges the stuck dripper, and at the same time the outer ring resumes forward rotation.

[0056] In this embodiment, the rejection mechanism 4 can also be a second cylinder. The second cylinder is positioned at the same location as the air nozzle, and its control end is connected to the signal output end of the control unit. After receiving the rejection command, the power output end of the second cylinder (i.e., the free end of the push rod) moves towards the stuck dripper, which can also expel the stuck dripper.

[0057] In this embodiment, the first sensor 2 and the second sensor 3 are photoelectric sensors. They can be changed to capacitive sensors, inductive sensors, ultrasonic sensors, pressure sensors or mechanical sensors according to the actual situation, as long as the first sensor 2 and the second sensor 3 can realize the function of detecting the drip tip.

[0058] In this embodiment, three braking mechanisms 5 are evenly arranged around the outer ring. The number of braking mechanisms 5 can be adjusted according to the actual situation, as long as the outer ring can be stopped in time. The braking method of the braking mechanism 5 is that the brake rod 51 presses against the outside of the outer ring, or the brake rod 51 can be pressed against the inside of the outer ring to achieve the braking effect.

[0059] In this embodiment, the braking mechanism 5 uses the first cylinder 52 to push the brake lever 51 against the outer side of the outer ring to achieve the braking action. The braking mechanism 5 can also use other braking methods, such as: achieving braking by tensioning the brake band around the outer ring. The brake band can be a belt.

[0060] In addition, the value of N in this embodiment is 1, but its value can be changed according to the actual situation. In practical applications, N can be set to a value between 1 and 3 according to the production line speed.

[0061] In summary, this embodiment, through automatic detection and linkage control, can accurately identify and remove jammed drippers when they are stuck, significantly reducing downtime, energy consumption and maintenance costs, and ensuring the continuity of high-speed production lines.

[0062] Example 2: A dripping head screening machine

[0063] This embodiment is a dripper screening machine, which adopts an embedded dripper screening device disclosed in Chinese Utility Model Patent No. CN202823900U. It uses the control unit that comes with the embedded dripper screening device, but it is reprogrammed and defined to form the control unit of this embodiment. Then, other structures and components of the embedded drip tape dripper positioning and discharge mechanism of Embodiment 1 are added.

Claims

1. A drip irrigation tape dripper positioning and discharging mechanism with an embedded plate, characterized in that, It includes a first sensor fixed on the conveying track to detect the dripper, a second sensor fixed at the entrance of the conveying track to detect the dripper, and a control unit; The signal output terminals of the first and second sensors are connected to the signal input terminal of the control unit; the signal output terminal of the control unit is connected to the control terminal of the motor controlling the outer ring. After receiving a first detection signal from the first sensor indicating that no dripping head has been detected for N seconds and a second detection signal from the second sensor indicating that a dripping head has been detected, the control unit sends a drive command to control the motor to stop and reverse; N is a positive number.

2. The embedded drip irrigation tape dripper positioning and discharge mechanism according to claim 1, characterized in that, It also includes a rejection mechanism for discharging the dripping head; The rejection mechanism is fixed to the side wall of the outer retaining ring; The signal output terminal of the control unit is connected to the control terminal of the rejection mechanism; After receiving the first detection signal and the second detection signal, the control unit sends a rejection command to control the rejection mechanism to discharge the stuck drip head.

3. The embedded drip irrigation tape dripper positioning and discharging mechanism according to claim 2, characterized in that, The rejection mechanism includes an air nozzle, a solenoid valve, and an air source; The blowing end of the air nozzle faces the dripper, and the other end is connected to the air source through a solenoid valve; The signal output terminal of the control unit controls the connection of the solenoid valve.

4. A drip irrigation tape dripper positioning and discharging mechanism according to any one of claims 1 to 3, characterized in that, At least one braking mechanism is fixed around the outer ring to stop the outer ring from rotating; The signal output terminal of the control unit is connected to the control terminal of the braking mechanism; After receiving the first detection signal and the second detection signal, the control unit sends a braking command to control the braking mechanism to perform the braking action.

5. The embedded drip irrigation tape dripper positioning and discharging mechanism according to claim 4, characterized in that, The braking mechanism includes a brake rod that presses against the outer side of the outer ring of the screening machine to cause braking during braking, and a first cylinder that pushes the brake rod to brake. The control terminal of the first cylinder is connected to the signal output terminal of the control unit.

6. A drip irrigation tape dripper positioning and discharging mechanism with an embedded plate as described in any one of claims 1, 2, 3, or 5, characterized in that, It also includes an alarm; the signal input terminal of the alarm is connected to the signal output terminal of the first sensor; the alarm will trigger an audible and visual alarm after receiving the first detection signal.

7. The embedded drip irrigation tape dripper positioning and discharging mechanism according to claim 4, characterized in that, It also includes an alarm; the signal input terminal of the alarm is connected to the signal output terminal of the first sensor; the alarm will trigger an audible and visual alarm after receiving the first detection signal.

8. A drip irrigation tape dripper positioning and discharging mechanism with an embedded plate as described in any one of claims 1, 2, 3, 5, or 7, characterized in that, The first sensor and the second sensor are respectively one of a photoelectric sensor, a capacitive sensor, an inductive sensor, an ultrasonic sensor, a pressure sensor, or a mechanical induction sensor.

9. A dropper screening machine, characterized in that, It is equipped with an inlaid drip tape dripper positioning and discharge mechanism as described in any one of claims 1 to 8.

Images